There are many, many choices among wrist braces. Soft, hard, long short, stiff and adjustable. I've learned from personal experience that there are too many variables in bowler and brace to make sweeping recommendations. However, this is the list of braces I own:
Mongoose Equalizer
Mongoose Lifter
Mongoose Optimum
Ebonite Striker
Storm Xtra-Roll
Storm Gadget
Robby Revs I
Robby Revs II
If you want a good sampling different brace types, I'd look at the Equalizer, Lifter, and Revs II. I'm not a huge fan of the the largest and most restrictive type braces (Gadget and Revs I for me), so I wouldn't recommend going down that path until you've written off the less restrictive types.
You can stare at them and hear other bowler opinions, but there is no substitute for trying them out and deciding through trial and error. Assuming you'll stay with a brace, it's worth the investment to buy and try out a few different types.
BTW, I'm currently rotating between the Storm Xtra-Roll and Robby Revs II depending on what I'm trying to accomplish and lane condition. When I want to stay further under the ball for more hook, I'll go with the Revs. When conditions are more toasty and I need greater release versatility, the Xtra-Roll is more useful. But again, it's individual preference.